Scopus记录号: 2-s2.0-85056209644
论文题名: Predicting shifts in the functional composition of tropical forests under increased drought and CO2 from trade-offs among plant hydraulic traits
作者: Bartlett M.K. ; Detto M. ; Pacala S.W.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2019
卷: 22, 期: 1 起始页码: 67
结束页码: 77
语种: 英语
英文关键词: CO2 fertilization
; drought avoidance
; drought tolerance
; functional composition
; global change
; plant competition
; plant hydraulics
; stomatal optimization
; tropical forest
Scopus关键词: adaptation
; carbon dioxide
; carbon fixation
; competitive ability
; drought resistance
; drought stress
; dry season
; evergreen forest
; fertilizer application
; functional change
; global change
; hydraulic conductivity
; optimization
; phenotypic plasticity
; prediction
; stomatal conductance
; trade-off
; tropical forest
英文摘要: Tropical forest responses are an important feedback on global change, but changes in forest composition with projected increases in CO2 and drought are highly uncertain. Here we determine shifts in the most competitive plant hydraulic strategy (the evolutionary stable strategy or ESS) from changes in CO2 and drought frequency and intensity. Hydraulic strategies were defined along a spectrum from drought avoidance to tolerance by physiology traits. Drought impacted competition more than CO2, with elevated CO2 reducing but not reversing drought-induced shifts in the ESS towards more tolerant strategies. Trait plasticity and/or adaptation intensified these shifts by increasing the competitive ability of the drought tolerant relative to the avoidant strategies. These findings predict losses of drought avoidant evergreens from tropical forests under global change, and point to the importance of changes in precipitation during the dry season and constraints on plasticity and adaptation in xylem traits to forest responses. © 2018 John Wiley & Sons Ltd/CNRS 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122771
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Ecology and Evolutionary Biology, Princeton University, 109 Eno Hall, Princeton, NJ 08544, United States; Princeton Environmental Institute, Princeton University, 129 Guyot Lane, Princeton, NJ 08544, United States
Recommended Citation:
Bartlett M.K.,Detto M.,Pacala S.W.. Predicting shifts in the functional composition of tropical forests under increased drought and CO2 from trade-offs among plant hydraulic traits[J]. Ecology Letters,2019-01-01,22(1)